The Latvian transmission system operator Augstsprieguma tīkls (AST) signed a contract for the supply and installation of the battery energy storage system (BESS) in substations in Tume and Rēzekne with the German company Rolls-Royce Solutions, whose offer to implement the project. . The Latvian transmission system operator Augstsprieguma tīkls (AST) signed a contract for the supply and installation of the battery energy storage system (BESS) in substations in Tume and Rēzekne with the German company Rolls-Royce Solutions, whose offer to implement the project. . Latvenergo, a prominent public electricity utility in Latvia, has invited a tender for the procurement of Battery Energy Storage Systems (BESS). The tender, titled “Elektroenerģijas uzkrāšanas sistēmu (BESS) piegāde/ Supply of Battery Energy Storage Systems (BESS)”, was published on January 27. . Latvian transmission system operator JSC "Augstsprieguma tīkls" (AST) has received three financial offers for supply and installation of battery energy storage systems (BESS – Battery Energy Storage System) in Tume and Rezekne substations. Similarly to solar energy and electromobility, this is a strategically new business area for Latvenergo, which is aiming to. .